2156730045 has 16 divisors (see below), whose sum is σ = 3452544000. Its totient is φ = 1149664064.

The previous prime is 2156730019. The next prime is 2156730053. The reversal of 2156730045 is 5400376512.

It is a cyclic number.

It is not a de Polignac number, because 2156730045 - 2¹⁴ = 2156713661 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2156729988 and 2156730015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6045 + ... + 65954.

It is an arithmetic number, because the mean of its divisors is an integer number (215784000).

Almost surely, 2^2156730045 is an apocalyptic number.

It is an amenable number.

2156730045 is a deficient number, since it is larger than the sum of its proper divisors (1295813955).

2156730045 is a wasteful number, since it uses less digits than its factorization.

2156730045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74004.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 2156730045 is about 46440.6077156619. The cubic root of 2156730045 is about 1292.0081786026.

The spelling of 2156730045 in words is "two billion, one hundred fifty-six million, seven hundred thirty thousand, forty-five".